Coin-registering mechanism.



W. H. HALL.

COIN REGISTERING MECHANISM. APPLIOATION FIL ED JUNE 6, 1911. 1,075,972. Patented Oct. '14, 1913.

2 SHEETS-SHEET 1.

Wz'tneSsea- V AF 1 W H HALL.

COIN REGISTERING MECHANISM.

APPLICATION FILED JUNEB, 191i.

Patented Oct. 14, 1913.

2 snnms-snnm 2.

i i i i l A A i v A UNITED sTArr is rigrnnr OFFICE.

WILLIAM H. HALL, OF CICERO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO NORTH AMERICAN NOVELTY COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

Application filed June 6, 1911.

To all whom it may concern:

Be it known that 1, WILLIAM H. HALL, a citizen of the United States, residing at Cicero, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Coin-Registering Mechanism, of which the following is a specification.

The object of this invention is to provide an improved and practical means for mechanically indicating or registering the value of different coins. It may be used in different forms. As herein shown and described, the device is in the form of a registering toy bank, and indicates the value of the coin on the usual make of standard numbering wheels. In a device of this character intended to correctly and unfailingly register the value of different coins of nearly the same size, and intended primarily to be sold as a toy for the use of children, it is highly important that the coin receptacle be so arranged that a slight discrepancy or straining of parts will not permit one coin to register for another of nearly the same size. Also that the mechanical parts, and their operation, be free from complicated movements, andthat one short movement of the operating handle accomplish all that is desired and dispose of the coin, leaving the handle free to move in either direction from any point of its path, with the bank held in any position. Along these lines the mechanism herein described has been carefully planned.

The fundamental principle of the construction is based on a rigid stationary coin pocket with a fixed stop for the coins, in connection with an oscillating member on which is mounted a lever adapted to engage the coins in the pocket and be flClltlStGtl thereby to engage and operate the registering mechanism according to the value of the coin. By this no. el constrmtionbne short .movement of the operating handle accom plishes everything to be desired in a device of this character. with the employment of only a few simple operating parts.

It is obvious that the fundamental and novel features of the parts and the construction may be varied as to details and yet accomplish the same end.

Specification of Letters Patent.

Patented Oct. 14, 1913.

Serial No. 631,570.

The accompanying drawings and the de scription show my preferred plan of construction.

Similar marks of reference refer to the sal'ne parts throughout exceptthe terms Quarter, Nickel, Penny, Dime. These are used on different parts of the drawings to designate the parts that operate together for the respective coins.

Figure 1. is a perspective view of a registering toy bank containing this mecha nism. Fig. 2. is a front elevation of the mechanism mounted in the case with the front and top of the case removed. The mechanism as viewed in this figure is divided into two distinct sections-the act-uator and the register and designated Y and Z respectively, Figs. 3, at and 5 being details of section Y. Fig. 3. is a front elevation of the coin receptacle or pocket. Fig. 4;. is a side elevation of same. Fi 5 is a front elevation of an oscillating (Ti-um, of which the handle B is an integral part. On the drum is pivotally mounted two levers,

the figure as a whole comprising all the movable parts of the actuating mechanism (side views of the drum and its parts are indicated and shown in Figs. 6 and 7.) The heads of the drum are firmly held together by the rivet posts f f f. There is no circumference wall on the front side of the drum as viewed in this figure, but there is a circumference wall of the opposite side eX- tending from the handle B down to the bot tom. Fig. 6. is a vertical sectional "iew of Fig. 2 on the line a a in the direction of the arrow. Fig. 7. is a. vertical sectional view of Fig. 2 on the line b b in the direction of the arrow. Fig. 8. is a vertical view of the oscillating disk H, Fig. 2 (on the line 0 c in the direction of the arrow.)

Following is a detailed description of the parts:

The mechanism is mounted on a sheet iron supporting frame J, see Figs. 2, 6 and 7. J is an upturned portion of this frame and forms a portion of the wall between the mechanism and money box, also a bearing for one end of the shaft G. The money box occupies the right hand end of the casing as viewed in Fig.2 and extends under the mechanism, occupying the entire bottom of the case as shown in Fig. 6. The sheet iron frame as shown in this figure forms a bridge over that portion of the money box under the mechanism. In Fig. 2 is shown another upturned port-ion J of the frame J for providing a bearing for the opposite end of the shaft G. A door indicated in the lower left hand end of the case in Fig. 1 provides a means for taking money out of the bank.

. The rigid stationary coin pocket D is firmly riveted to the supporting framed by rivets (Z rL-Figs. 2, 6 and 7. On the sides of this pocket are flanges D D, Figs. 3 and 4, extending from the bottom well up toward the top, for the purpose .of making the pocket firm and rigid. On the bottom of these flanges are teats d d which pass through the supporting frame 'J and are clenched on the under side. Thus the coin pocket is firmly secured to the supporting frame J and in such per end, or mouth of the pocket registers at all times with the slot A in the casing through whichthe coins enter. See Figs. 1 and 7. The nest of dotted circles in section Y, Fig. 2, indicates the positions of a quarter, nickel, penny, dime, as they rest, on the bottom of the pocket. The protruding circle to the right indicates the escape of the coin intothe money box. Reference to this figure will show a high point D in the bot tom of the coin pocket. This is the fixed stop on which all coins lodge. Both sides of the pocket are open, but it is mounted within the walls of the oscillating drum F, F and the heads of the drum form walls in either side of the pocket. The swinging 'movements of the drum on its axis are limited by posts j, f",'extending through the drum from end to end, (see Fig. 7), and riveted to the drum ends, one or the other of said posts being adapted to abut. against the base of the coin' pocket or against the supporting flanges D D as the drum reaches the end of its movement in each direction. The axis of the drum is fixed relatively to the coin pocket by the main shaft G which passes through the center of both drum heads and through the lugs D This novel construction insures rigidity and firmness between the operating parts and the coin; reduces the chances of a misplacement of parts to a minimum and renders the mechanism a simple and safe manufacturing proposition.

Between the heads of the drum F F, Figs. 2 and 5, also Fig. 7 is pivotally mounted, on

the post f, a swinging lever having two arms or prongs E and E. The arm E is adapted to engage with the coins in the pocket and be tilted by such engagement to different angles according tothe I on the lower free end of the arm E is a lug a formed at right angles to the arm, which engages with and operates the registering a position that the up- D of the coin pocket..

size of the coin, and

mechanism according to the value ;of the coin. This is the operating member of the actuating mechanism, the connectin link between the actuator and register. T e de tails of its construction may vary. For example the member could be made withone arm instead of two and'the lug placed on the one arm with the same effect. The office of the member is to impart to the registering mechanism a part of the movement of the drum according to the value of the coin with which the member contacts.

The c '"-.ration: A coin is dropped through the slot A, Fig. l and passes into the coin pocket D, Figs. 2 and 7.. The handle B, i

which is an integral part of the drum head F, is moved downward in the direction of the arrow, the pivoted point of the lever E, E on the post f is carried in-an almost horizontal path over the top of the coin pocket, causing the arm E to Contact with the top of the coin in the pocket. This contact is made possible and certain by the vertical slot D, Figs. 2, 3 and 4, cut into both walls of the coin pocket directly in the path of the arm E as it is moved forward by the action of the handle B just described. As indicated by the dotted circles in Fig. 2, when a coin of either denomination rests in the pocket its upper edge will cross this slot, and hence the path of the arm E,'at some point. The dots in the coinpockct Fig. 7 marked Quarter, Nickel, Penny, Dime, indicate the top edge of these respective coins. This contact tilts the operating member to different angles according to the size of the coin, and causes it to operate the registering section'acccrding to the value of the coin, in the following manner: Referring now to Fig. 7, when the operating member E, E is tilted by contact with a coin, the lug e is carried into engagement with the ratchet teeth on the ratchetbar K. This ratchet bar K is pivotedly mounted on the outside of the drum head by the rivet- 7c and held against the shaft G, which serves as a stop, by the torsion spring L, against which spring it yields as the pin 6 passes over the slanting sides of the ratchet teeth. The-relation of the parts just described is such that this lug at its widest range of movement-which occurs immediately after contact of the arnrE with the coin is made will be carried into engagement with and firmly held by the tooth on the ratchet bar K corresponding to the coin with which the arm E contacts. Thus the first short movement of the drum sets and locks the operating member in a predetermined position where it is adapted to engage and correctly, operate the registering section. The registering section isthat part of Fig. 2 designated by the letter Z and consists of the two numbering wheels with pawl and ratchet attachment, parts usually foimd in the standard make of numbering devices.

The disk H, Figs. 2 and 8, is provided with a paw-1 H which engages the ratchet wheel M, this ratchet wheel being rigidly mounted the side of the first numbering wheel. I. This disk H, as shown in Fig. 8, has a cut-out section with points of contact in the walls thereof corresponding to the coins the machine is intended to register, and adapted to be engaged by the lug a after it has been tilted into operating engagement by the arm E contacting with a coin in the pocket. Thesepoints of contact are marked Quarter, Nickel, Dime and are in the same radius as corresponding marked teeth on the ratchet bar K. Hence when the lug e is, -lodged in one of these teeth on the bar K, and the handle, B is moved to the bottom of its path, the lug will contact with the point on the disk H that comes within its path and carry the disk with it. The pawl H mounted on the disk will engage and operate the ratchet wheel M and through this operate the first numbering wheel I. The second numbering wheel I is operated by the first through the medium of a mutilated pinion, the position of which is indicated by the letter N, Fig. 2, this 0011- stituting what is known as the Geneva movement. the operation of which is well known. The relation between the full ini tial movement of the drum; the action of the operating member E, E when it contacts with coins of different denominations; and the varying positions of the respective points of contact on the disk H with which the lug e is brought into engagement as the result of such movement and contact. are such that when a quarter, nickel or dime is dropped into the pocket and the mechanism operated as above described, 2'. c. the handle B, as shown in Fig. 7, is moved to the bottom of its path as indicated by dotted lines in this figure the value of the coin in the pocket will be correctly registered on the numbering wheels, the result being visible through the openings 1, Fig. 1. This machine is not intended to register a penny, hence if a penny be dropped into the slot. the relation of the parts above referred to is such that the pin will be carried into the elongated cut-out slot, designated Penny on the disk H, Fig. 8 and no operation of the registering section will take place. it is important that the oscillating disk H. Fig. '8, shall always be in proper position and not be liable to an overthrow in either direction by a quick jerky movement of the handle. To this end I provide the friction spring H. The engaging end of this spring is U shaped, the upturned edges being formed close together, the lower The friction thus created prevents the disk being thrown ahead of the lug e by a quick movement. The U shape also avoids any possibility of the spring slipping 0d the disk. When the handle B reaches the lower end of its path the operation is completed, the lug e is disengaged from the ratchet bar K (as hereinafter described) and drops to the hub of the disk as indicated in Fig. 8. Reference to this figure will show a notch near the hub in the rear wall of the cutaout section. The lug slides into this notch, as indicated by the circle (2, and as the handle B is returned to its normal position, the lug 2 forces the disk back to its normal position. A notch h in the periphery of the disk engages with the end of the spring H and prevents any possibility of the disk being moved too far back. A friction spring M, Fig. 8. engaging the ratchet wheel M, is made like the spring II and answers for the same purpose on the ratchet wheel M. In addition to registering the coin, the movement of the handle B from its normal position as shown in Fig. 7, to the bottom of the slot C, Fig. 1, without the addition of any other movable parts, will automatically discharge the coin from the pocket into the money box, although the pocket is normally closed against the lodgment of coin therein from the money box and the registering mechanism will therefore be rendered inoperative. The operating handle is normally free to move in either direction from any point of its path, but is locked against a reverse movement so long as a coin is in the pocket. The depositslot A in the cats ing is closed except when the operating handle is in normal position and the slot C- the path of the handle Bis completely closed at all times against interference with the mechanism. If the coin in the pocket be not in proper position, it will either be forced back into position or will lock the mechanism against operation. The coin will be discharged into the money box because the slot F, Fig. 6, in the drum head F will be brought to register with the side of the coin pocket D when the handle B has reached the end of its path as indicated by the dotted lines, and as there is an unobstructed opening, J in the wall J just opposite the stationary position of the coin pocket, there will then be an open passage from the pocket to the. money box and reference to Fig. 2 will show the bottom of the pocket slopes toward the wal hence the coin will roll out. v'hile the mechanism is in this position, coins cannot be lodged in the pocket from the money box, because just before the handle B reaches the lower end of its path, the lug k, on the ratchet bar K, Figs. 2, 5 and 7, contacts with periphery of the disk passing between them. the rear wall of the coin podket and pushes ted lines in Fig. 7, reference to which will purpose of closing the deposit slot A. Refthe ratchet bar K out of engagement with the lug e, and the downward pressure of the spring 6 forces the operatin lever E, E into its normal position as indicated by dot show that the curved end of the arm E extends across the coin pocket. This action will force a coin out of the pocket even though the bank be tilted over to the left as viewed in Fig. 2, but the end of the arm across the coin pocket will prevent a coin being lodged in the pocket. This action also renders the mechanism inoperative because the lug 6 will be resting on and travel on the curved portion of the disk H as. indicated by the small circle 6 and the segment of the circle near the center of the disk H in Fig. 8. For the purpose of permitting the lug e to drop to this inoperative position when in engagement with the nickel point of contact, or when moving in the penny slot, both of which carry the lug directly over the dime point of contact, see Fig. 8, an offset is made in the extension of the wall of the'cut-out section on the end of which the dime point of contact is located. This offset extends from the base of the extended arm, nearly to its end. allowing free passage for the lug when disengaged from the ratchet bar K at the end of the stroke of the handle B. This offset is indicated in Fig. 2 on the left side of'the disk ll just abovethe hub. During the initial move ment of the handle while the coin was 11 the pocket, the slanting sides of a series of ratchet teeth, F'. Fig. 6, on the inside wall of the drum head F, engaged and passed the coin without interference, but an attempt to reverse the action of the drum would have brought the straight side of the teeth into engagement with the coin and prevented the backward movement. But when the coin is discharged there is no interference, hence the operating handle may be moved in either direction from any point.

The circumference wall \V on the rear side of the drum as viewed in Fig. 5 is for the erence to Fig. 7 will show that when the handle B is moved forward in its path this wall passes between the slot A and the mouth of the coin pocket. The slot C, Fig. l, is entirely closed at all times by a flange on the left side of the drum head as viewed in Figs. 2 and 5, said flange being provided for that purpose. It is partially broken away to show the lever K.

Should the bank be tilted to the left, as viewed in Figs. 1 and 2, either before or after a coin is dropped into the pocket, sufticient to cause the coin to fall to the left of the fixed stop D" it would rest against the drum head F, and the edge of the coin would enter the slot F Fig. 7, which slot is in the said drum head and registers with the side of the coin pocket when the handle B is in normal position. This would prevent any operation until the bank was righted. The coin cannot balance on the point D. It must fall to one side or the other. Reference to Fig. 2 will show the point D" is considerably to the left of the center of the coin pocket and when the bank is in a perpendicular position the coinv will be guided to the right and rest against the drum head F where it is in position to be properly registered and discharged. Shoul the bank be tilted to the front or back suflieient to causethe'coin to slide toward the top of the coin pocket. the pressure of the spring 6' on the operating lever E, IE will force it back into position. If the coin should slide to the top of the pocket it would 7 prevent operation because it would engage the lever E just in front of the pivoted 'point f. After the handle B has been moved a very short distance forward--suflicient for for the arm E to contact with the coin-the bank could be turned bottom side up without interference with the proper operation.

From the foregoing description it will be seen that all contingencies have been provided for by the use of" simple and inexpensive mechanism.

I claim 1. In a coin registering machine, the com bination of an oscillating drum, and a rigid stationary coin pocket mounted therein, the heads of the drum forming walls on either side of the pocket.

In a coin registering mechanism, the combination of a stationary coin pocketadapted to hold a coin on edge, an oscillat-' able member, and means disposed in operative position by engagement with a coin in said pocket and adapted to subsequently eject said coin edgewise from said pocket.

The combination with a coin registering mechanism, of a stationary coin pocket, an oscillating member. and an operating lever mounted on said oscillating member, said lever being adapted to engage the coins in the pocket and to' be positioned thereby to engage and operate the registering mechanism.

4. In a coin registering mechanism, the combination of a stationary coin pocket, and

' an oscillatable drum constructed to prevent release of the coins from the pocket until said drum approaches the end of its movement.

5. In a coin registering mechanism, the combination with a stationary coin pocket, of an oscillatable member, having spaced walls forming walls for the pocket, one of said walls being provided with a slot to permit the release of coins from the pocket.

6. In a coin registering mechanism, the combination with a stationary coin pocket, of an oscillatable member, and means con trolled by said member to eject the coins from the said pocket at the end of movement of the said member.

7. The combination with a coin registering mechanism, a rigid stationary coin pocket having a fixed stop therein for the coins, of an oscillating drum, and an operating member mounted on the drum and adapted to engage the coins in the pocket and to be adjusted thereby to engage and operate the registering mechanism, the drum having a wall for detaining the coins in the pocket and with an opening in the Wall for subsequently releasing them at the end of the initial movement of the drum.

8. The combination with a coin registering mechanism, of a rigid stationary coin pocket, an oscillating drum, an operating member mounted on the drum and adapted to e age the coins in the pocket and be ad juste thereby to engage and operate the registeri mechanism, the drum being pro- Vi ed w t an opening for releasing the coins at the end of the initial movement of the oscillating drum.

9. The combination with a coin registering mechanism, of a rigid stationary coin pocket, an oscillating drum, an operating member mounted on the drum and adapted to e age the coins in the pocket and be adjuste thereby to engage and operate the registering mechanism, and means for supporting the operating member in position until the coin has been registered.

10. The combination with a coin registering mechanism, of a rigid stationary coin pocket an oscillating drum, an operating member mounted on the drum and adapted to engage the coins in the pocket and be adjusted thereby to engage and operate the registering mechanism, means for supporting the operating member in position until the coin has been registered, and means for subsequently withdrawing such support when the coin has been registered.

11. The combination with a coin registering mechanism, of a rigid stationary coin pocket an oscillating drum, an operating member mounted on the drum and adapted to engage the coins in the pocket and be ad justed thereby to engage and operate the registering mechanism, and means to prevent a reverse movement of the drum until the coin has been discharged.

12. The combination with a coin registering mechanism, of a rigid stationary coin pocket an oscillating drum, an operating member mounted on the drum and adapted to engage the coins in the pocket and be adjuste thereby to engage and operate the registering mechanism, and means for en'- gaging the coins in the pocket to prevent a reverse movement of the drum until the coin has been discharged.

13. The combination with a coin registering mechanism, of a rigid stationary coin pocket an oscillating drum, an operating member mounted on the drum and adapted to engage the coins in the pocket and be adjusted thereby to engage and operate the registering mechanism, and means on the drum for engaging the coins in the pocket to prevent a reverse movement of the drum until the coin has been discharged.

14. The combination with a coin registering mechanism, of a rigid stationary coin pocket having a fixed stop therein for the coins, an oscillating drum, an operating member mounted on the drum and adapted to engage the coins in the pocket and be adjusted thereby to engage and operate the registering mechanism, and means for preventing coins in the money box being lodged in the coin pocket,

15 The combination with a coin registering mechanism, of a rigid stationary coin pocket having a fixed stop therein for the coins, an oscillating drum, an operatin member mounted on the drum and adapted to engage the coins in the pocket and be adjusted thereby to engage and operate the registering mechanism, and means on the drum for closing the deposit slot except when the drum is in normal position.

16. The combination with a coin register ing mechanism, of a rigid stationary coin pocket having a fixed stop therein for the coins, an oscillating drum, an operating member mounted on the drum and adapted to engage the coins in the pocket and be adjusted thereby to engage and operate the registering mechanism, and means on the drum for closing the slot through Which the operating handle moves.

17. In a coin registering mechanism, the combination with a rigid stationary coin pocket having a fixed stop therein for the coins, of an oscillating drum, an operating member pivotally mounted on the drum and adapted to engage the coins in the pocket; and a registering section, comprising num boring wheels, a ratchet wheel mounted on the first numbering Wheel, and an oscillat ing disk with a pawl adapted to engage the ratchet Wheel, a friction spring adapted to control the range of movement of the disk, said disk having a cutout section with points of contact in the Walls thereof adapted to be engaged by the operating member after it has been tilted to operating engagement by contact with the coins in the pocket, and means for releasing the coins at the end of the initial movement of the oscillating drum. 7

18. In a coin registering mechanism, the

combination with a rigid stationary coin pocket, of an oscillating drum, a fixed stop in said pocket for the coins, said stop being adapted to guide the coins to be registered and to discharge them when the pocket is in perpendicular position, and when the pocket is tilted laterally, with the discharge side uppermost, to guide the coins to the opposite side' whcrethey will engage the drum and prevent operation.

19. The combination with a coin registering mechanism, of a rigid stationary coin pocket, an oscillatable drum, an operating member mounted on the drum having an arm to engage coins in the pocket and to be positioned thereby, to engage and operate the registering mechanism, and a spring pressed ratchet bar pivotally mounted on the drum and having teeth to engage the operating member until the coin has been registered.

20. The combination with a coin registering mechanism, of a rigid stationary coin pocket, an oscillatable drum, an operating member mounted on the drum having an arm to engage coins in the pocket and another arm to engage and operate the registering mechanism, the said arms being positioned by a coin in the pocket, and a spring pressed ratchet bar pivotally mount ed upon the drum and having teeth which engage and retain the second named arm in position until the coin is registered.

21. The combination with a coin registering mechanism, of a rigid stationary coin pocket, an oscillatable drum, an operating member mounted on the drumhaving one arm to engage coins in the pocket and another arm having a laterally extending lug to engage and operate the registering mechanism, the said arms being positioned by the coin in the slot, a spring pressed ratchet bar pivotally' mounted on the drum and having teeth to engage the said lug and to retain the arms in the position assumed thereby by reason of the engagement of one of them with a coin. in the pocket, and means to engage the ratchet bar to release the lug and the Said arms when a coin is registered.

22. A device of the character herein described, embodying 'therein a difi'erentially operative mechanism,-a fixed coin chute. a main actuating mechanism provided with means whereby it may be automatically set to impart varlable movement to said ditt'erentia ly operative mechanism through en gagemcnt with a coin in said chute, means operative at ditterent points in the move ment of said main actuating mechanism for variably actuating said differentially operative mechanism, and means whereby said main actuating mechanism is uniformly actuated irrespective of the degree of actuation of said differentially operative mehanism.

523. A device of the character herein described, embodying therein a differentially operative mecl'ianism, a fixed eoin'chute, a main actuating mechanism provided with means whereby it may be automatically set to impart variable movement to said differentially operative mechanism through engagement. with a coin in said chute, means operative at different points in the movement of said main actuating mechanism for variably actuating said dittcrentially operative mechanism, means whereby said main actuating mechanismtis uniformly actuated irrespective of the degree of actuation of said (litterentially operative mechanism, and a manually operative controlling mechanism actuating said main actuating mechanism.

A device of the character herein described, embodying therein a differentially operative mechanism, a fixed coin chute, a main actuating mechanism comprising tWo elements, one ofi which is adapted tohave movement ii'idependently of the other, whereby said actuating mechanism may be automatically set to impart variable movement to said ditt'erentially operative mechanism through enga ement of said element with a coin in said c mac, and both of said elements being adapted to operate simultaneously after said first named element is set, means operative while said elements are simultaneously actuated for variably actuat+ ing said differentially operative mechanism, manually operative controlling means, and a plate operated thereby and adapted to transmit movement to said last named element through said first named element.

25. A deviceof the character.herein described, embodying therein a difterentially operative mechanism, a fixed qoin chute, a main actuating mechanism comprising two elements, one of which is adapted to have movement independently of the other Whereby said actuating mechanism may be automatically set to impart variable movement to said diflerent-ially operative mechanism through engagement of said element with a coin in said chute, arid both of said elements being adapted to operate simultaneously after said first named element is set, said first named element having a series of graduated abutmeitts thereon, means operative while said elements are simultaneously actuated for variably actuating said ditlerentially operative mechanism and a stud carried by said last named means adapted to be engaged by any of said abutments.

26. A device of the character herein described, embodying therein a differentially operative mechanism, a fixed coin chute, adapted to receive coins of different denominations, having an inlet slot at the top thereoffa closed bottom, and a discharge slot adjacent to said bottom, a main actuating mechanism provided with means whereby it may be automatically set to imactuating mechanism whereby after the setpart variable movement to said differentially ting of said mechanism a coin in said chute 10 operative mechanism through engagement Will be ejected therefrom.

with a coin in said chute means operative at different points in the inovement of said WILLIAM HALL main actuating mechanism for variably actu- Witnesses: ating said differentially onerative mecha- JOHN M. DUFFY,

nism, and an ejector actuated by said main ALANSON C. WEBB. 

